Varian 820-MS
a. Quadrupole RF frequency: 3.0MHz
b. Dynamic range : 9 order of magnitude
c. All-pulsed count ETP AF250 Discrete Dynode Electron Multiplier as standard
d. Long term stability: 4% RSD or less over 4hours
e. Oxides CeO+/Ce+ : 1%
f. Sensitivity : 114 In ; 1000Mcps/ppm, 232Th ; 300Mcps/ppm
9Be; 50Mcps/ppm
g. Detection Limites ng/L ppt :
Be ; 0.5ppt, V ; 0.2ppt, Al; 0.8ppt, Co ; 0.2ppt
As ; 0.6ppt, U; 0.06ppt, In; 0.1ppt, Pb; 0.3ppt
h. Pump number : Two rotary DS602 & DS302 & Two turbomolecular pumps V-301
i. Capability: TMP(300L/sec), One Rotary(600L/min) the other Rotary(300L/min)